Electronic chip-carrier heat sink



FIG. 1 is a perspective view of an electronic chip-carrier heat sink showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, looking toward the right side of the heat sink as it appears in FIG. 2;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom view thereof. 

The ornamental design for an electronic chip-carrier heat sink, substantially as shown. 